html, body {
    width: 100%;
    height: 100%;
    .Num{
        width: 100%;
        height: 100%;
        font-size: 120px;
        font-weight: bold;
        color: #fff;
        background-color: #1592CC;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}